Hydraulic pumping jack



March 10, 1925. 1528,805

J. D. WADE HYDRAULIC PUMPING JACK Filed June 9, 1923 3 Sheets-Sheet 1 28 32 25 2? I Y 2 E:. I

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. March 10. 1925.

1 J. D. WADE HYDRAULIC PUMPING JACK 3 Sheets-Sheet 2 Filed June 9, 1925 gwuenkoz I IBM/ado.

March 10, 1925.

J. D. WADE HYDRAULIC PUMPING JACK Filed June 9, 1923 3 Sheets-Sheet 3 Patented Mar. 10, 1925.

2 UNITED STATES JAMES D. WADE, OF GONZALES, TEXAS.

HYDRAULIC PUMPING JACK.

Application filed June 9, 1923. Serial No. 644,329.

To all whom it may concern:

- Be it known that I, JAMES D. Wanna citizen of the United States, residing at Gonzales,"Gonzales County, Texas, have invented a certain new and useful Improvement in Hydraulic Pumping Jacks, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to fluid power operated jack to be used in pumping deep wells and has particular application to oil well operations.

Oil wells are ordinarily com aratively deep, often several thousand feetfleep, and the head of liquid to be pumped is so great as to constitute a heavy load on the operating arts. The liquid, together with the weig t of the rods and plunger, cause the plunger to be forced back, at the end of its upward stroke, with eat force. Where the stroke is rapid and t e length of stroke not properly timed, there is danger of jerking the pump rods excessively'causing them to crystallize rapidly and break.

An object of my invention is to provide a pumping installation, the operation of which will cushion the force of the load on'the down stroke of the rods and plun r, thus avoiding the danger of injury to t 6 pump.

Another object is to providea pumping apparatus which can be adjusted to operate with different lengths of stroke or at different speeds with equal efliciency and without'vibration and damage to the pump rods.

Another object is to rovidea hydrauli cally operated pump which may be readily adjusted for automatic regulation and whereinthe arts are simple and strong and not easily ama ed.

These'an other objects and advantages, and the means whereby they are accomplished, will be set'forth with particularity in the specification which follows:

Referring to the drawing herewith where? in like numerals of reference are applied to like parts in all the views, Fig. 1 is a side elevation partly in section showing the application of my invention to a pump; Fig. 2 is a similar side elevation taken at approxlmately right angles to the view shown in I1*);g. 1, the upper portion of the installation in sectit m approximately on the line 3-3 of with a two-way valve 16, 'sai broken away;- Fig. 3 isa transverse Fig. 1 and Fig. 4 is a similar transverse section on the line 4-4 of Fig. 1'.

My invention is shown as applied to the upper end of a casing 1, which projects downwardly into the well. The upper end of the casing is connected to a special head 2 which is threaded internally at its lower end for connection to the casing and is flared outwardly at its 'upper end to form a ciroular plate 3 upon which the pumping apparatus may be mounted. Formed in one side of the casing head 2 is a lateral opening 4 threaded for the attachment of a pipe 5 through which the fluid may find an outlet. The inner throat of the casing head 2 may be threaded as shown at 6 to receive a special nipple or bushing 7. This bushing is swedged inwardly at the upper end and provided with a stulfing box comprising a gland 8 which is adapted to compress the packing 9 within the upper end of the said bushing. This stufling box'is adapted to maintain a tight sliding fit about a polish rod 10 of ordinary construction. The upper end of the casing head 2 above the threaded throat 6 is tapered outwardly at 11 to provide av seat for slips of ordinary construction, .to'

In carrying out this idea I have provided C a distribution chamber 12, made as shown in Fig. 4,.of a U-shaped chamber having a centra passage 13 therein communicating with three separate cylinders 14. The operating fluid is pumed into the chamber 13 through a lateral inlet pipe 15. This ipe connects valve being opler'ated b 1 a lever 17, the governing of w ic'h will later described. Fluid finding entrance to the valve through a supply pipe. '18 may be directed through the pipe 15 to the compression chamber, or may, when the valve is properly turned, find a continuous passage back to the source of supply through a b -pass 19.

contemplate employing a plurallty of cylinders for the operation of the pump rod,

and, as previously noted, three such cyhnders are shown in the drawing. To provide rue connection with these cylinders, the comression, chamber 12 has three upwardly 'rected openings 20, which are internally threaded to connect with the cylinders 14 previously noted. These cylinders extend upwardly for a suitable distance, and I contemplate forming them from three to six feet long, although it is obvious they may be made of any desired length. The'upper end of each of the cylinders, as shown particularly in Fig. 1, is threaded externally for attachment to a stufling box 21. This stufiing box has a packing 22 and an upwardly pro- 'ect1ng arms, at the ends of which are bearlugs 26 which are clamped about the reduced u per ends of the pistons by means of lateral p ates on said bearin s secured in place by means of clamping bolts 27 The upper .ends of the pistons are threaded, and the yoke, or spider, is held firmly on said pistons by means of nuts 28.

There 1s a second lower yoke or spider 29, similar in construction to the yoke 25 and this yoke is shown particularly in F1 3. It has clamping plates 30 at the ends oi the radial arms, said plates adapted to fit about the cylinders 14 and form a slidable connection therewith. The yoke or spider 29 .is connected rigidly with the upper-spider 25 by means of a plurality of'rods 31, said rods being firmly connected; at each end to the said yokes by means (if nuts 32 thereon. These rods, as will be noted, serve to space the two plates apart and to connect them rigidly together so that they will operate in unison. The lower plate only is connected to the pump rod and to accommodate said rod a lateral slot, 33 is formed in the side of the yoke, extending inwardly to acentral opening, 34, in which is received the u per end of the polish rod, 10, which ro is clampedrigidly in position in said opening by means of a clamping nut 35 on said rod.

The fluid which is pumped into the compression chamber 12 to force the pistons up- -wardly in the cylinders in an obvious manner, has an exit through the outlet pipe 36 at a point spaced somewhat from the inlet opening. Said pipe 36 has a valve 37 therein which is workedthrough a lever 38 therewhich is adapted to be automatically operated by a valve gear, which will belater described. The compression chamber and the pumping apparatus connected therewith is rigidlysecured to the base plate 3 by attaching lugs 39 on said chamber, which are adapted to register with similar lugs on said plate. Openings in the two cooperating-parts are adapted to register and to form an attach-' ment by means of bolts 40 passing therethrough.

The automatic operation of the inlet and outlet valves 17 and 38 previously described, is obtained through a special Valve gear which is operated through the movement of the lower yoke or spider 29. As shown in Fig. 3, one of the clamping plates 30 at the outer end of one of thcradial arms 29 is formed with a laterally extending plate 41 thereon. This plate is formed integral with the outer plate 30, and has, on each end thereof, an outer opening 42 and an inner opening 43. There is, therefore, a pair of openings at each end of the said plate 41, and said openings form a connection for operating valve rods which cooperate therewith. On the end of said plate, above the inlet valve'17 a rod 44 is slidably received within the outer opening 42 and an inner rod 45 is secured adjustably within the opening 43 by means of nuts 46, one on each side of said plate, said rod being threaded so that the length thereof may be regulated in an obvious manner. The rod 44 is connected at its lower end 47 pivotally to one arm of 'the lever '17. Spaced upwardly from the lower end of said rod is a nut or block, 48, which is adjustable alon the length of said rod and adapted to be xed in position by set screw 49 on one side thereof. The upper end 50 of the rod is threaded and has a nut 51 thereon, which is adapted to be fixed in "adjusted position by set screw 52.

The valve rod 45 projects downwardly below the yoke and has formed thereon spaced below the upper end a valve oper ating means comprising a laterally projecting lug 53. A similar lug 54 is formed at the lower end, each ofsaid lugs having a shoulder at the end thereofto contact with the arm 55 of the lever 17.

The operation of the outlet valve 38 is governed in the same manner as is the valve 17, and rod 56 is secured rigidly to the yoke and extends downwardly closely adjacent the end 57 of the lever 38, and has a valve operatingmember 58 below the upper end similar in all respects to the operating member 53-of the rod 45. A second lug 1s formed at the lower end of said rod. In the outer opening 42 above the valve 38 is a rod 59 which is slidable through said opening, and has a nut 60 adjustable-thereon at the upper end, and a nut 61 adjustable thereon at a point spaced above the lower end, and has the lower end pivotally hooked at 62 within the arm 63 of the lever 38.

The operation of this device may now be understood. It is contemplated that the entrance of fluid through the pipe 18 may be compression chamber. The force of the fluid will carry the pistons upwardly to the end or theirstroke. Theoperation of the valves will then automatically cause the release of pressure, allowing the pistons to drop and throw the weight of the apparatus and the load upon the plunger and pump rod. On the up stroke of the, pistons and the lower yoke 29, the plate "41-will eventuallycontact with the upper nut 51 upon the rod 44, and

' by so doing throw the arm at 47 upwardly to a slight extent tending to partly close the inlet valve. At the moment the inlet valve is thus partly closed. the plate 41 will contact with the nut 60 on the valve rod 49 It. will, however, only partially open said valve, allowing a slight amount of fluid to find an outlet through the valve. The regulation of the opening through the outlet pipe 36 by means of hand-operated valve therein, will allow the fluid to go out at any desired rate. The load of the fluid in the well coming upon the yoke. 29 will tend to cause the pistons and the pump rod to drop slowly, and this weight will be cushioned upon the liquid in'the cylinders below the pistons. The descent of the yoke and rod will bring the lower shoulder 54 against the arm 55 of the lever 17 and force it fully closed. As the yoke and pistons descend, the shoulder on the lower end of the block on the rod 56 will contact with the outer end of the lever arm .57 on the valve 38, throwing it abruptly downward and opening the valve to its fullest extent, allowing the said block to pass downwardly beyond the lever arm. The fluid may then pass out through the outlet pipe 36 at the regulated rate of flow, and this ratemay be adjusted so as to allow the pistons to be carried downwardly by gravity at the desired rate, according to the speed of operation desired in the particularpump to which the device is applled. It will also be obvious that adjustingthe blocks 51 and 61 upon the rods 44 and 59 will serve to adjust the length of stroke in the manner desired. v When the downward stroke has been corn pleted, the lower face of theplate 41-w1ll contact with the nut 48 and throw the Valve lever 17 to open the valve slightly and the same plate striking the nut 61 on rod 59 W11} tend to partially close the valve 37. The pistons will then start up and the lug 54 will strike the arm 55 and completely open valve 16 to admit a tull volume of fluid to the cylinders thus moving the pump rod upwardlyto-complete the upper stroke. The upward movement of the yoke 41 will bring the lug 58 against the arm 57 and close the outlet valve immediately on the commencement of the stroke upwardly. At the end of the upward stroke the valves will be again actuated to release the hydraulic pressure and allow the piston and-pump rod to drop as previously described.

i This construction will be silent and powerful in its action and easily adjusted and controlled. The cushioning action of'the fluid will remove all jar and vibration, thus eliminating a great source of wear;

The further objects and advantages of my device will be apparent toone skilled in the art.

What I claim as new and desire to protect by Letters Patent is:

1. An operating means for deep well reciprocating pump rods comprising a distributing chamber, a plurality of upright cylinders secured in said chamber, pistons in saidcylinders, a pump rod yoke secured to said pistons; a valve controlled inlet for motive fluid to said chamber, a slowly operating valve controlled butlet therefrom and means secured to said pump rod yoke to control said valves simultaneously during the operation of'the pistons.

2. An operating means for deep well reciprocating pump rods comprising, a distributing chamber, a plurality of vertically. arranged cylinders connected with said chamber, pistons in said cylinders, a pump rod yoke secured to said pistons, valve-controlled inlet and outlet pipes for motive fluid connected with said chamber, and valvegoverning rods on said pump rod yoke adapted to move the valves separately 1n pipes for the purpose pump rods comprising, a compress on chamher, cylinders connected therewlth, pistons in said cylinders. connecting means between said pistons and the pump rod and automatically operated valves to admit fluid under pressure to said chamber and to permit it to exhaust in such manner as' to cushion the down stroke of the pump rod in the manner described.

5. An operating means for reciprocating to said cylinders, valves in said a air of valve control rods on said second hauste pumps comprising, a cylinder, a piston therein, connecting means between Salli-P151:

.of said ;liquid, and means to out off said liquid and to simultaneously allow it to ex haust at a predetermined rate.

7.. operating means for reciprocating pumps comprising, a plurality of cylinders, pistons therein, a yoke connectin the upper ends of said istons, a second yo e connected with said upper oke and slidable on said pistons, inlet an outlet pipes leading ipe, and

yo e for eachof said valves whereby liquid under dpressuremay be admitted and ex- 8. lln' 'a-punip operating means, a lurality of cylinders, pistons therein, hy aulic therefrom at a predetermined rate.

means to raise and lower said istons in said cylinders at a predetermine rate and thereby prevent jar upon said pump and a pump rod operated by said pistons.

I 9. In a reciprocating pump, the combination of acasing head, a tapered seat in the upper end thereof, a closure for said casing head comprising a threaded nipple havin threaded connection with said casing hea below said tapered seat, a stuffing box therein a pump rod'adapted to fit slidably in said stufiing box and a plurality of hydraulically operated pistons connected with said pump rod above said stuffing box in the manner described.

10. In a reciprocating pump, the combination of a casing head, a tapered seattherein, a threaded connection below said seat, a nipple attached therein, a pump rod having a sliding fit with said nipple, a fluid com ression chamber above said casing hea cylinders connected therewith, hydraulically operated pistons in said cylinders and a connection between said piston and said pump rod.

In testimony whereof, I hereunto afiix my signature this the 2nd day of June, A. D..

JAMES B. WADE. 

